Justin Bieber has been cleared of allegedly ''hotboxing'' a private plane with marijuana smoke.

The 20-year-old star, his father Jeremy Bieber and an entourage of 10 flew were accused of forcing pilots to have to wear oxygen masks to prevent them from inhaling the drug and compromising their abilities while flying from his native Canada to New Jersey in January, but following an investigation the Federal Aviation Administration (FAA) has officially closed the case.

Despite the decision, Justin, who was detained by security for several hours at LAX airport in Los Angeles in April as a result of the incident, is still very likely to be treated with suspicion by US Customs in the future due to his other brushes with the law, according to gossip website TMZ.com.

Meanwhile, the 'Heartbreaker' hitmaker will reportedly settle his driving under the influence (DUI) case with a plea bargain in court in Miami on Monday (07.05.14)

A source previously indicated he is preparing to plead guilty to reckless driving after he was arrested in January for allegedly drag racing through the streets of the city in the early hours of the morning.

Justin was also charged with resisting arrested and driving without a valid licence, but it is believed those charges will be dropped if he pleads guilty, pays a fine and attends anger management classes.